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Investments (Tables)
3 Months Ended
Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract]  
Schedule of Components of Investments
Investments consisted of the following as of March 31, 2024 and December 31, 2023:

As of March 31, 2024
Adjusted Cost BasisUnrealized GainsUnrealized LossesFair ValueCash and Cash EquivalentsMarketable Securities -
Current
Marketable Securities -
Non-current
Asset-backed securities$448 $— $(1)$447 $— $— $447 
Money market funds271,458 — — 271,458 271,458 — — 
Total investments$271,906 $— $(1)$271,905 $271,458 $— $447 

As of December 31, 2023
 Adjusted Cost BasisUnrealized GainsUnrealized LossesFair ValueCash and Cash EquivalentsMarketable Securities -
Current
Marketable Securities -
Non-current
Asset-backed securities$1,132 $— $(7)$1,125 $— $— $1,125 
Money market funds287,060 — — 287,060 287,060 — — 
Total investments$288,192 $— $(7)$288,185 $287,060 $— $1,125 
Schedule of Debt Investment Maturities
Adjusted Cost Basis
Estimated Fair Value
March 31, 2024
Due in one year or less
$— $— 
Due after one year through five years
448 447 
Total
$448 $447